Lunar Laser Ranging: A Continuing Legacy of the Apollo Program

@article{Dickey1994LunarLR,
  title={Lunar Laser Ranging: A Continuing Legacy of the Apollo Program},
  author={Jean O. Dickey and Peter L. Bender and James E. Faller and X. X. Newhall and Randall L. Ricklefs and Judit Gyorgyey Ries and Peter John Shelus and Christian Veillet and Arthur L. Whipple and J. R. Wiant and J. G. Williams and Charles Finney Yoder},
  journal={Science},
  year={1994},
  volume={265},
  pages={482 - 490}
}
On 21 July 1969, during the first manned lunar mission, Apollo 11, the first retroreflector array was placed on the moon, enabling highly accurate measurements of the Earthmoon separation by means of laser ranging. Lunar laser ranging (LLR) turns the Earthmoon system into a laboratory for a broad range of investigations, including astronomy, lunar science, gravitational physics, geodesy, and geodynamics. Contributions from LLR include the three-orders-of-magnitude improvement in accuracy in the… 

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